Title :
Prediction of surface wave radiation coupling on microwave planar circuits
Author :
Vanhoenacker, Danielle ; Huynen, Isabelle
Author_Institution :
Microwaves U.C.L., Louvain-la-Neuve, Belgium
fDate :
8/1/1995 12:00:00 AM
Abstract :
A theoretical and experimental study is presented for spurious radiation coupling induced by radiated surface waves on planar circuits, at frequencies up to 20 GHz. The radiation coupling phenomenon generated by a planar line containing a discontinuity is modelled by an equivalent E-field planar radiation pattern associated with the current waveform along this line in the presence of the discontinuity. It is observed that the direction of the main and side lobes of this pattern varies with frequency. The model is validated by measurements of radiation coupling obtained on microstrip configurations, up to 20 GHz. Theory and measurements agree very well. The model yields for instance the directions of maximum spurious radiation coupling on a planar line in the vicinity of a radiating line
Keywords :
microstrip lines; microwave circuits; surface electromagnetic waves; 0 to 20 GHz; current waveform; equivalent E-field planar radiation pattern; main lobes; maximum spurious radiation coupling; microstrip configurations; microwave planar circuits; planar line; side lobes; surface wave radiation coupling; Antenna radiation patterns; Brain modeling; Coupling circuits; Electromagnetic coupling; Electromagnetic radiation; Frequency; Microstrip components; Microwave circuits; Space technology; Surface waves;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
